230) For the isochronous Porter governor, the controlling force curve is a straight line passing through the origin.

231) The virtual or equivalent eccentric for the Meyer's expansion valve is defined as an eccentric having such a length and angle of advance that will cause cut-off to take place at the same position, as is caused by the combined effect of main eccentric and e

232) The uniform pressure theory gives a higher frictional torque than the uniform wear theory.

233) The centrifugal tension on the belt has no effect on the power transmitted.

234) The train value of a gear train is